I've cut back to discovering content only via other sources (HN, other communities, friends) by blocking the homepage and sidebar recommendations entirely.
Plug this into your uBlock "My Filters" and YT should become far less addictive. It blocks both direct homepage access and SPA routing (on the latter the homepage will just be blank):
||youtube.com^|$doc
youtube.com##ytd-browse[page-subtype="home"]
! 2022-02-07 https://www.youtube.com
www.youtube.com##ytd-item-section-renderer.ytd-watch-next-secondary-results-renderer.style-scope